package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo9 {
    public static void main(String[] args) {
        System.out.println("欢迎回来");
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = sc.next();
        System.out.println("请输入密码:");
        String password = sc.next();
        System.out.println("请输入昵称:");
        String nickname = sc.next();

        try(Connection connection = DBUtil.getConnection();
            Statement statement = connection.createStatement()){
            String sql = "select id, username, password, nickname, age\n" +
                    "from userinfo\n" +
                    "where username = ? and password = ?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1, username);
            ps.setString(2, password);
            ResultSet rs = ps.executeQuery();
            if (rs.next()){
                System.out.println("登录成功！");
            }else {
                System.out.println("用户名或密码错误！");
            }
        }catch (Exception e){
            e.printStackTrace();
        }

    }
}
